Updating opencascade to 6.5.2.

I had to bring an older ftgl in.


svn path=/nixpkgs/trunk/; revision=32742

pkgs/development/libraries/ftgl/gcc.patch

@@ -0,0 +1,13 @@
+diff --git a/include/FTTextureGlyph.h b/include/FTTextureGlyph.h
+index c263f72..8959cb3 100755
+--- a/include/FTTextureGlyph.h
++++ b/include/FTTextureGlyph.h
+@@ -52,7 +52,7 @@ class FTGL_EXPORT FTTextureGlyph : public FTGlyph
+          * Reset the currently active texture to zero to get into a known state before
+          * drawing a string. This is to get round possible threading issues.
+          */
+-        static void FTTextureGlyph::ResetActiveTexture(){ activeTextureID = 0;}
++        static void ResetActiveTexture(){ activeTextureID = 0;}
+         
+     private:
+         /**